Automobile Urea Tank and Forming Method Thereof

Abstract

The present invention relates to an automobile urea tank produced using a forming method. The method includes the following steps: (a) producing an upper half casing and a lower half casing through an injection molding method; (b) after the upper half casing and the lower half casing are formed, assembling built-in parts of the upper half casing and the lower half casing; (c) welding the assembled upper half casing and the assembled lower half casing to form a whole; and (d) assembling components on surfaces of the upper half casing and the lower half casing. This method can improve design freedom of built-in elements of the tank body, and can save a lot of raw materials; the structure is simple and firm; moreover, the production efficiency is improved, and the production cycle is shortened.

What is claimed is: 
     
         1 . An automobile urea tank produced using a forming method comprising the following steps:
 (a) producing an upper half casing and a lower half casing through an injection molding method;   (b) after the upper half casing and the lower half casing are formed, assembling built-in parts of the upper half casing and the lower half casing;   (c) welding the assembled upper half casing and the assembled lower half casing to form a whole; and   (d) assembling components on surfaces of the upper half casing and the lower half casing,   the automobile urea tank comprising the upper half casing and the lower half casing, wherein the upper half casing is provided with a baffle and a tank body surface component assembling structure that are injection molded with the upper half casing; the lower half casing is provided with a fender assembling screw and a sensor port welding structure that are injection molded with the lower half casing; a pump assembly is welded on the sensor port welding structure; an outer surface of the upper half casing is provided with a valve body structure assembled through the tank body surface component assembling structure.   
     
     
         2 . The urea tank according to  claim 1 , wherein a seal structure is disposed below the valve body, and the seal structure is a seal gasket or a seal ring. 
     
     
         3 . The urea tank according to  claim 1 , wherein the valve body comprises an inlet control valve, a filling vent valve, and a working vent valve; the inlet control valve is connected to a urea filler tube opening through a urea filler tube, the filling vent valve is connected to a pressure retaining valve through a filling vent pipe, and the working vent valve is connected to a working vent pipe. 
     
     
         4 . The urea tank according to  claim 2 , wherein the valve body comprises an inlet control valve, a filling vent valve, and a working vent valve; the inlet control valve is connected to a urea filler tube opening through a urea filler tube, the filling vent valve is connected to a pressure retaining valve through a filling vent pipe, and the working vent valve is connected to a working vent pipe. 
     
     
         5 . An automobile urea tank produced using a forming method comprising the following steps:
 (a) producing an upper half casing and a lower half casing through an injection molding method;   (b) after the upper half casing and the lower half casing are formed, assembling built-in parts of the upper half casing and the lower half casing;   (c) welding the assembled upper half casing and the assembled lower half casing to form a whole; and   (d) assembling components on surfaces of the upper half casing and the lower half casing,   the automobile urea tank comprising the upper half casing and the lower half casing, wherein the upper half casing is provided with a tank body surface component assembling structure that is injection molded with the upper half casing; the lower half casing is provided with a fender assembling screw, a sensor port welding structure, and a baffle that are injection molded with the lower half casing; a pump assembly is welded on the sensor port welding structure; and an outer surface of the upper half casing is provided with a valve body structure assembled through the tank body surface component assembling structure.   
     
     
         6 . The urea tank according to  claim 5 , wherein a seal structure is disposed below the valve body, and the seal structure is a seal gasket or a seal ring. 
     
     
         7 . The urea tank according to  claim 5 , wherein the valve body comprises an inlet control valve, a filling vent valve, and a working vent valve; the inlet control valve is connected to a urea filler tube opening through a urea filler tube, the filling vent valve is connected to a pressure retaining valve through a filling vent pipe, and the working vent valve is connected to a working vent pipe. 
     
     
         8 . The urea tank according to  claim 6 , wherein the valve body comprises an inlet control valve, a filling vent valve, and a working vent valve; the inlet control valve is connected to a urea filler tube opening through a urea filler tube, the filling vent valve is connected to a pressure retaining valve through a filling vent pipe, and the working vent valve is connected to a working vent pipe.